LIGO Laboratory is the U.S. national facility for gravitational-wave research. The first detections of gravitational waves by LIGO in 2015 haveopened the field of gravitational-wave physics and astronomy. Funded by the National Science Foundation, LIGO Laboratory's mission is to observe gravitational-wave sources, to operate the LIGO Hanford and Livingston Observatories in support of national and international scientific community,to carry out research and development for future gravitational-wave detectors, and to carry out scientific education and public outreach related to gravitational wave astronomy.